Questions tagged [sudo]

The sudo command allows users to run programs with the privileges of a different user (normally the root user). Use this tag for questions related to configuring and using the sudo command.

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Is sudo -i less secure than pkexec?

I just heard that it isn't recommended to use sudo -i on GUI programs - because it's less secure. Is there any truth here - is there an advantage to this: sudo -i gedit /random/file.name over ...
Tim's user avatar
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6 votes
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Allow a regular user to mount VeraCrypt volume without admin privileges

A regular user is unable to mount a VeraCrypt volume without first authenticating with an administrator password. According to the original TrueCrypt documentation, the workaround is to give the user ...
slatica's user avatar
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Sudo hangs, internet disappears, and computer cannot be shut down after computer has been asleep for a long time

Sorry in advance for the lack of detailed technical info here - I'm doing my best but I'm relatively new to linux troubleshooting. I'm using Ubuntu 21.10 (specifically the Ubuntu Budgie DE, in case ...
Sparksbet's user avatar
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5 votes
1 answer
7k views

Getting error while running sudo commands, from /etc/sudo.conf file

I want to run commands in terminal with sudo and get in this error for running sudo commands: sudo su sudo: error in /etc/sudo.conf, line 16 while loading plugin "sudoers_audit" sudo: ...
BarzanHayati's user avatar
5 votes
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Using setfacl to give a user full permissions on a folder owned by root

How do I give a user to do whatever they please inside /var/www/myapp folder, which is owned by root, considering that I don't want to change the owner? I have setup TeamCity CI. It runs under user ...
JustAMartin's user avatar
5 votes
1 answer
3k views

How can I run dotnet on ubuntu without using sudo?

I've been trying to update the permissions so that I can run a command (specificially dotnet restore). I'm not sure if this issue is specific to running dotnet, or if it is more generic. I can run ...
fuzzi's user avatar
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0 answers
12k views

EC2 sudo unable to resolve host

I have this issue on AWS on Ubuntu 16.04-amd64-server. Whenever I run sudo the terminal is stuck doing seemingly nothing, giving me the following error: root@ip-10-20-54-234:/home# sudo -s sudo: ...
Millat's user avatar
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5 votes
1 answer
1k views

How is the guest account prevented from using su and sudo?

It's already known that the guest account can't use su or sudo: Why is su disabled from guest sessions? Sudo not available in guest login How is this done? My guess would be apparmor. However, ...
muru's user avatar
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How to disable mpm-itk for a specific virtualhost?

I've a main site on a server that needs to run a sudo command which I white listed via visudo. That worked fine until I installed apache-mpm-itk and then I started getting the following error: sudo: ...
vboctor's user avatar
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4 votes
0 answers
746 views

`sudo` outputs strange message since update to 22.04 on wrong password

Since release upgrade (update) to Ubuntu 22.04.1 LTS, using sudo, but mistyping the password, so using a wrong password, leeds to the following additional output: ## any command seems to work, tried ...
kgSW.de's user avatar
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Unable to sudo apt-get update for Ubuntu (Windows subsystem for Linux)

Err:1 http://archive.ubuntu.com/ubuntu focal InRelease Temporary failure resolving 'archive.ubuntu.com' Err:2 http://security.ubuntu.com/ubuntu focal-security InRelease Temporary failure resolving ...
Lusarusrex's user avatar
4 votes
1 answer
2k views

sudo select auth method (password vs fingerprint)

In Ubuntu 20.04, after activating and enrolling my fingerprint in Applications menu ->Users and after enabling the fingerprint in terminal using sudo pam-auth-update and checking the fingerprint ...
Marinescu Sorin's user avatar
4 votes
0 answers
701 views

Configure pkexec to only prompt for password once

When using sudo there is a timeout where you don't have to type the password again for x minutes when you run sudo again. Is it possible to get the same thing for graphical applications which use ...
krispy's user avatar
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How do I restrict specific passwordless sudo sub-commands?

Is there a way to restrict the passwordless sudo commands to a set of "sub-commands". I am not looking for the answer to How do I run specific sudo commands without a password? I want to know if I it ...
Daniel Morell's user avatar
4 votes
0 answers
1k views

How to allow ZSH to autocomplete ZFS

System: I'm running Ubuntu 16.10 with ZFS and ZSH installed. Expected behaviour: As the root user, I can press tab to autocomplete zfs commands and paths. It works both in zsh and bash. As a non-root ...
lindhe's user avatar
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installing python fails with permission denied (using sudo make install)

I tried to install Python 3.6 using this tutorial: https://www.programiz.com/python-programming#run-python-os on ubuntu 14.04. Running $ ./configure and $ make went fine. Running $ sudo make ...
very's user avatar
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1 answer
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Ubuntu for Windows 10

I am new to using Ubuntu for Windows 10. I have been trying to be able to run cron on the unix but I am getting a cron:can't open or create /var/run/crond.pid: Permission denied This is happening ...
user3550783's user avatar
4 votes
3 answers
4k views

Can't Use SSH Keys Unless Running SSH With Sudo

For some reason I'm unable to SSH from my Ubuntu 15.10 machine to a remote server using a private key if I run ssh without sudo. Server side config is fine. I have tested the private key from my ...
user1564192's user avatar
4 votes
1 answer
8k views

How to add Active Directory users as sudoers

I'm following this article. What I've done: I can connect to Active Directory I can login to the Active Directory Now what I'm looking for is a way to make any active directory user a sudoer. I'm ...
pedrommuller's user avatar
4 votes
1 answer
8k views

What causes “pam_unix … conversation failed” in auth.log

There are thousands of entries in my auth.log like this: sudo: pam_unix(sudo:auth): conversation failed What causes these to occur? I'd like to fix whatever it is but I'm a bit mystified as to where ...
RoyHB's user avatar
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3 votes
1 answer
2k views

Oracle Cloud - Why can I use sudo without a password?

I have a new user account created on an oracle cloud free tier VM, called testacc. This account is a member of the sudo group, and the testacc group. Password login is disabled, and I log in with a ...
Jademalo's user avatar
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3 votes
0 answers
921 views

No problems logging in, but sudo gives authentication failure

So to start things off I have had a server running Ubuntu 18.04 for the last two years or so running just fine. I was logged in to it last night copying some files to my NAS and doing a few other ...
bidget's user avatar
  • 31
3 votes
0 answers
72 views

sudo stopped working after a failed dependency update

sudo stopped working after I have tried to update a dependency from libc6XXXX to libc6YYYY, required by an experimental text editor. On the first try, it didn't work and apt-get suggested I use the --...
Techie19's user avatar
3 votes
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1k views

"sudo su -" vs. "sudo -i" and /etc/environment

On an Ubuntu 14.04 host that I frequently update (apt-get update followed by apt-get full-upgrade) I have an /etc/environment file with some critical variables in it. Until recently sudo -i -u fred ...
cjs's user avatar
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3 votes
1 answer
418 views

Password checking takes long even though it's not wrong

I'm aware that there is an intended delay when entering a wrong password. However, since about yesterday, my Ubuntu 16.04 takes 10-20 seconds or sometimes even more to verify the password, even though ...
StuntHacks's user avatar
3 votes
0 answers
3k views

Dpkg::Options::="--force-confold" for just a specific package?

I normally edit my /etc/sudoers file to include my username with some options. When using apt-get to upgrade, I get the prompt to choose the newer version (dist-version) or my edited version, if the ...
Irah Najararadnus's user avatar
3 votes
0 answers
3k views

Why does reboot require sudo but shutdown does not?

I use Ubuntu 16.04. and 18.04. LTS and I was wondering why I have to be sudo to reboot (i.e. sudo reboot) but that the shutdown command does not require sudo. I can use any of its variants like ...
YukiJ's user avatar
  • 143
3 votes
0 answers
3k views

Execute a command as another user by providing THEIR password

I need to execute a command as another user by providing THEIR password. This must be able to be done without a terminal aka purely through bash script. I also need to be able to do this without ...
Bradley Odell's user avatar
3 votes
1 answer
1k views

What is the most secure way to use sudo permissions in a script?

I have a bash script which needs to perform some actions while using sudo, both with root user permissions and permissions for other users, such as main user on a postgres database. These actions need ...
Arronical's user avatar
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Why is neither /root/.bashrc nor /root/.profile executed after sudo -i?

I have export PATH="$PATH:/opt/local/bin" in /root/.bashrc and /root/.profile (nothing else in /root/.profile) and /bin/bash is the login shell for root in /etc/passwd. Yet invoking sudo -i (which ...
Kalle Richter's user avatar
3 votes
1 answer
264 views

Problem installing reader software for Estonian ID card for ubuntu 14.04

I updated my ubuntu 13.10 to 14.04 and now I have problems to install Estonian ID card reader software. When I trie to use the installation script, that I have downloaded from https://installer.id.ee/...
Taavi Lukin's user avatar
3 votes
0 answers
2k views

Reset sudoers file

I want to add a new user to run all commands without a password, so I went to edit /etc/sudoers (using visudo of course) by adding the line myuser ALL=NOPASSWD: ALL. Everything is OK, but 15 minutes ...
tan ho's user avatar
  • 31
3 votes
1 answer
2k views

Can't start program without using sudo

I have monodevelop 5.7 installed on my computer with ubuntu 14.10, but when I tried run it from launcher and from the command ~$ monodevelop they didn't work. But when I used the command ~$ sudo ...
Quyet Nguyen's user avatar
3 votes
0 answers
204 views

Entry in sudoers

I need the following entry for a autoresponder/vacation plugin for roundcube with plesk: www-data ALL=NOPASSWD: /opt/psa/bin/autoresponder But the system doesn't recognize www-data as a user. Only ...
server-admin's user avatar
3 votes
1 answer
513 views

Eclipse Juno won't open gui java apps when run with gksudo

I have Eclipse Juno installed on Ubuntu 12.04. When I run from the command line with sudo, everything works fine. However, when I follow the advice I see everywhere and run it with gksudo, I get the ...
jenzinas's user avatar
3 votes
2 answers
3k views

How to pass arguments in a script using gnome-terminal

As part of a script I have gnome-terminal -e "process involving another user" Once executed this line, I have to write in the terminal 3 times the password of this user. I wonder how can I ...
fbn's user avatar
  • 31
2 votes
0 answers
50 views

Sudo access using AD without using FQDN

I've been able to get my server setup where it will allow me to use my AD credentials to login, and sudo works as well, but only if I sign in using [email protected]. I changed the /etc/sssd/sssd/...
user1709122's user avatar
2 votes
1 answer
442 views

Piping sudo <command> through another command adds excess whitespace

Background I wanted to identify if <complex command pipeline> outputs any non-printable characters (it must be run with sudo), so I piped the output through od and was surprised to see each line ...
user avatar
2 votes
1 answer
529 views

Is there a way to use the Fingerprint reader authentication for sudo and other situations, today is only useful at the login

I am using Ubuntu 22.04 LTS with the XPS 13 Plus 9320
logicito's user avatar
  • 391
2 votes
0 answers
111 views

Can't build my react in ubuntu without sudo

I have a react project and want to get a build. When I run yarn to install packages, it works fine and installs all packages. after I run yarn build , I get so many nonsense typescript errors like ...
Mj Ebrahimzadeh's user avatar
2 votes
1 answer
193 views

Selectively enable sudo without password

On my Ubuntu system I followed the instructions for enabling sudo without a password. It is working well, or should I say too well. I have a couple of users, say userA and userB, who have been added ...
Sandeep's user avatar
  • 121
2 votes
0 answers
377 views

Open terminal and run sudo command on startup

I have a custom command script called uua, that I put in /bin, and made it executable with chmod +x. I want my console to launch on startup and run the uua command, without me putting in the password ...
rogue1's user avatar
  • 21
2 votes
0 answers
1k views

How do I change the editor form vim to nano?

While using the command sudo apt edit-sources, accidentally chose vim instead of nano and don't know how to change it. I used sudo update-alternatives --config editor but it doesn't change the editor ...
LyingAmigo's user avatar
2 votes
0 answers
3k views

There was an error while getting the sharing information

I’m taking backup by Ubuntu 2.02 And it’s done. But when I open this folder’s properties then a notification appears. Notification is given below: There was an error while getting the sharing ...
Gurung Maya's user avatar
2 votes
0 answers
931 views

sudo hangs without (not prompting password)

I am on Ubuntu 18.04.5 LTS. Originally my problem was, that my WLAN didn't work anymore, so I was browsing through ask-ubuntu to find a solution just to realize that sudo hangs without prompting my ...
stefpe's user avatar
  • 21
2 votes
0 answers
361 views

Accessing wpa_supplicant using wpa_cli without sudo

I am using wpa_supplicant service to connect with wifi networks in ubuntu 18.04. Its configuration file is as below. ctrl_interface_group=sudo ap_scan=1 fast_reauth=1 update_config=1 p2p_disabled=1 ...
Aman Turate's user avatar
2 votes
1 answer
628 views

sudoers doesn't work

I added powertop to /etc/sudoers (sudo visudo) but it doesn't work. I checked all possible problems I can imagine. What did I missed? user@ellie:~$ whoami user user@ellie:~$ groups user adm cdrom ...
Arno's user avatar
  • 485
2 votes
1 answer
596 views

Server 19.10 on Raspberry Pi 4 defaults to root?

I've successfully installed Server 19.10, then got a desktop (Lubuntu) going on a single Raspberry Pi 4 (4gb). I went with the 32-bit version, having heard the 64-bit is not very stable. (Please ...
147pm's user avatar
  • 2,165
2 votes
1 answer
880 views

sudo with dash gives bad substitution

I tried to access a newly installed system via Emacs' Tramp the way I do it with all my other system: C-x C-f /ssh:server|sudo:root@server:/etc/network/interfaces This command timed out. After some ...
ceving's user avatar
  • 311
2 votes
1 answer
2k views

Always getting an error every installing expo-cli

So, basically, I always get an error every installing expo-cli through an npm or yarn, I wonder how to fix this error, Thank You. Using NPM : npm WARN deprecated [email protected]: This version has been ...
Miyuki Ouka's user avatar

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